"The Alexa Fluor 555 donkey anti–goat IgG is labeled with our superior orange-fluorescent Alexa Fluor 555 dye and is prepared from affinity-purified antibodies that react with IgG heavy chains and all classes of immunoglobulin light chains from goat. To minimize crossreactivity, it has been adsorbed against rabbit, rat, mouse and human IgG."